feat(view): ③ screen follows the 시안 — table columns, basis badges, alert buttons

- 철근표 columns as in the 시안: 구분 · 번호 · 규격 · 간격 · 실간격 · 위치 · 방향 ·
  형상 · 길이 · 개수 · 근거 · 비고. Metadata per bar from the rebar documents.
- 근거 badges: 입력 / 기본값 / 계산 / 가정 (the 가정 badge is italic amber).
- 번호 click highlights that row.
- 알림: [보기] opens the member tab; I02 [입력] focuses the fck input.
- Member tabs show the warning count.
- 공통 설정 moved to the right column (알림 → 검토 필요 → 공통 설정), as in the 시안.
- The 시안's "fck를 입력해야 생성" blocker is not used: the defaults are assumed
  values (I02), as decided on 2026-10-22.
- Not in this step: the drawings and the 정면·단면 연동 (시안 도면 뷰어).
- Not verified in a browser.

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

src/style.css

@@ -690,4 +690,13 @@ body { background: #eef1f4; font-family: 'Noto Sans KR', system-ui, sans-serif;
 .common { margin: 10px 0; display: grid; gap: 6px; }
 .mat { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 13px; }
 .mat input { width: 96px; padding: 4px 6px; border: 1px solid #b9c4d0; border-radius: 4px; }
+/* ③ 철근표: 근거 badge, row highlight, warning count on tabs */
+.basis { font-size: 12px; border-radius: 4px; padding: 1px 6px; white-space: nowrap; }
+.basis-input { background: #e2f2e7; color: #1d6b3a; }
+.basis-default { background: #eef1f4; color: #55606e; }
+.basis-calc { background: #e3edf8; color: #123e70; }
+.basis-assumed { background: #fff2dc; color: #8a4b00; font-style: italic; }
+.rebar-table tr.hl td { background: #fff6d6; }
+.rebar-table .bar-no { cursor: pointer; font-weight: 700; }
+.members .badge.warn { margin-left: 6px; background: #ffebd6; color: #8a4b00; }